A game theoretic model to detect cooperative intrusion over multiple packets

Abstract

A MANET is an infrastructure-less mobile network whose principle is multi-hop relaying between nodes. They are prone to malicious attacks as no authentication or security architectures can be implemented because the nodes can continuously join or leave the network. Numerous schemes have been proposed for intrusion detection in MANETs. Recently, game theoretic approach is emerging as a major research area. The intrusion detection is a tedious task because the nodes are dynamic. A few papers have analysed the problem and provided appropriate solutions. In this paper, a game theoretic model has been developed for modelling network intrusions for colluding attacks from multiple packets. Detection is done by sampling a portion of the packets moving through the network. Depending on a sampling budget, a sampling strategy is developed and an optimal solution is found out to increase the chances of successful detection of the intrusion.